US1325180A - Vacuum feed apparatus - Google Patents

Description

F. WEINBERG.

VACUUM FEED APPARATUS.

APPLICATION FILED MAR. 8. I9Ie.

1,325,180. Patented De@.16,1919.

. 75 y l /qrrQ/YEY `FEEIIDEIRZICJK WEINBERG?, 0F DETROIT, lltlIICIEIIG-AN.`

'VACUUM FEED APPARATUS.,

Specification of Letters Patent.

Patented Dec; 16, 1919.s

Application led March 8, 1916. Serial No. 82,870.

To all whom t may concern:

Be it known that I, FREDERICK WEINBERG, a citizen of the United States, residingat Detroit, county of Wayne, State of Michigan, have invented a certain new and useful Improvement in Vacuum Feed Apparatus, and declare the following to be a full, clear, and exact description of the same, s uch as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to vacuum feed apparatus for internal combustion engines and an object of myL improvements is to provide a more perfect apparatus for this purpose that may be easily assembled and cheaply constructed and which will operate at low speeds of the engine with the throttle valve o en and with engines of high volumetric e ciency.

I accomplish this obj ect in the device illustrated in the accompanying drawings in which this invention is shown in connection with an apparatus disclosed in part in my copending application Serial Number 61,535 filed November 15, 1915.

Figure 1 is a sectional view of an apparatus embodying lmy invention.

Fig. 2 is a sectional detail view of part of said apparatus. Y

F ig. 3 is a sectional view of a modified form of aportion of the apparatus.

a is the auxiliary tank consisting of thevacuum chamber b and the reservoir c. is is the supply tank, and m is a conduit by which gasolene passes from the tank lc to the vacuum chamber b. Z is a float in the vacuum chamber b.

-e is'a metal disk forming a dividing partition between the chamber b and reservoir c. The shells or inclosing walls of the chamber b and reservoir c are of thin bell-shaped metal having flanges at their open ends, which flanges are secured upon opposite sides of the disk e.

7L is the equalizing tube. This is flanged at its end as shown at i and passes through an aperture j in the flange of the bell-shaped inclosing wall of the chamber b. The flange a is clamped between said flange and the disk e with interposed packing, the bore of the pipe It registering with an aperture g in upon the upper surface of the disk e as" shown in Fig. 1 at m2 so as to secure said conduit in position.

n is a plug closing an aperture in the lower end of the bell-shaped inclosing wall of the reservoir c. This plug is supplied with a shoulder n fitting against the lower surface of the wall of the reservoir and it is spun over as shown at n2 to clamp against the upper surface of 'said wall and 'secur the plug in position. 0 1s a conduit leading( from the reservo1r c to the carbureter 02. o3 is the intake `pipe to an internal combustion engine communleating in any usual way with the carbureter.

o2.' p is a throttle valve in the intake pipe 03. g is a partof the combustion chamber of the engine and g2 is the intake valve. 'r'

is a pipe communicating with the combustion chamber g and terminating in a nozzle s having a very small aperturetherethrough, such for instance as would be formed by a number drill.

o is a vacuum producing passage consisting of a pipe communicating with the chamber b and with the intake passage 03 between the throttle valve p and the intake valve g2. t is an ejector nozzle forming the communicating passage between the pipe 'v and the intake pipe 03. The nozzle s opens into a contracted portion of the nozzle t axially in line therewith as shown in Figs. 1 and 3. ,o2 is an automatic valve between the chamber b and the ejector nozzlet. u

is the plug of a cock adapted to open and close the communication between the pipe r and nozzle s. u2 is a lever by which the plug u may be turned. p2 is a lever by which the may be omitted, as shown in the modication of Fig. 3.

r Obviously this device will operate to produce the vacuum even if it is not connected to the intake pipe.

fw is a plug closing an aperture in the upper portion of the inclosing bell-shaped Wall of the chamber b. wg is a chamber in said plug in which is placed a strainer w3. rlhe chamber wL communicates by a drilledI passage '104 with the vacuum chamber b and the supply conduit m, communicates with the chamber wg, so that the supply of gasolene passes from the conduit m through the strainer w3 and the passage w4 t0 the vacuum chamber 5 is a dellecting plate extending over the ioat (Z. This plate has grooves 7 in it with which grooves the passage lwt' communicates, thus the gasolene supplied to the chamber is carried beyond the float CZ and does not fall upon said float. The defiecting plate 5 is secured in place by a nut 10 screwed upon the threaded shank of the plug fw to secure the latter in place.

.2 and 3 are parallel legs of a U-shaped wire united by aloop 9. The leg 2 acts to displace the valve t0 open the equalizing passage L and upon the leg 3 is placed a valve t adapted to close the vacuum producing passage. 8 is a loop extending in a plane at right angles to the loop 9 and inclosing the latter. rihe loop 8 is rigidly connected to the fioat Z and is of such a size as to allow considerable lost motion between itself and the loop 9.

lw5 is a passage extending from grooves 7 to an opening covered by plug 106. This plug may be removed at will leaving an opening through which the apparatus may be primed when required.

The operation of the above described device is as follows:

When the float Z rises it contacts the loop 9 first contacting the valve in the equalizing passage then the float subinerges to an increased extent, then it forces said valve from its seat, and then rising further 'brings the valve i up against its seat closing the vacuum producing passage. W'hen the liquid is' drawn from the chamber Z7 the float Z falls until the upper part of the loop 8 engages the loop 9 and upon a further dropping of the levelof the sustaining liquid the weight of the oat d draws the valve 4 from its seat and opensv the vacuum producing passage. j

ln' starting up the fengine, the vacuum created in the intake manifold at nearly closed throttle, will create a vacuum in the suction passage o., and subsequently in vacuum chamber t, and fluidwill be drawn from the main tank 7c, through the liquid conduit m, over the strainer/w8 and passage `With the opening of throttle p, the

vacuum decreases rapidly, and to such an extent that it would not raise the fluid high enough for the height that comes in question in the modern vehicles. This is especially the case when the engine is climbing a hill on high gear, with wide open throttle, low engine speed and a very low located main tank. However it will be seen that with the opening of the throttle the lejector nozzle s is brought into communication through the passage r with the explosion chamber q and consequently the explosion gas from the engine will escape through the ejector and create a secondary suction entirely independent from the static depression in the intake manifold, in the pipe fu, and vacuum chamber Z). lt is then this new vacuum which draws the fluid from main tank lo througlrconduit m, into chamber b. As shown in Fig. 3, the nozzle may be located in the exhaust manifold 03 in which case it is entirely the ejector action of the nozzle that is being depended upon for raising the fuel.

Inail these cases the action of the medium surrounding the nozzle Whether it is eX- haust gases or air movement due to the moving vehicle supports and increases the ejector action.

It will be Observed that the plug 'n and the conduit m may be very cheaplv and etliciently secured in place in the construction shown and that the wire having parallel legs 2 and 3 united by the loop 9 with the engaging loop rigid with the float et' may be cheaply constructed and forms an easil)v assembled apparatus. rl`he same holds good for the fastening of the equalizing tube 7L. The chamber 102 may be cheaply and conveniently formed in the plug fw and the strainer w3 is located in a conveniently ac'- cessible place.

QJ is a bracket having the form of a portion of a cylinder with an inturned flange at `its upper end. The bracket is secured in place by the same bolts that secure the parts of the tank and the disk e together. rl`his bracket serves for a means for securing the tank to its support. The shape of 'the bracket makes it strong and rigid eren when made of light metal.

What l claim is:

1. In a vacuum feed apparatus, the combination of a vacuum chamber, an apparatus actuated by the vacuum therein and operated therewith to elevate a liquid, a.vacuum producing passage communicating with said chamber, an internal combustion engine adapted to be supplied from said apparatus, an ejector adapted to produce a vacuum in said passage, and means incident to the operation of the engine for actuating said ejector.

2.' rlhe combination of a vacuum chamber and apparatus actuated by the vacuum therein, and operative therewith, to elevate a liquid, a vacuum producing passage, and an ejector adapted to roduce a vacuum in said passage, an internail) combustion engine having a cylinder, said ejector being connected with the cylinder of the engine so that said ejector shall be.operated by gases supplied from said cylinder.

3. The combination of a vacuum chamber and apparatus actuated by the. vacuum therein, and operative therewith, to elevate a liquid, a vacuum producing passage communicating with said vacuum chamber, and an ejector adapted to produce a vacuum in said passage, an internal combustion engine having a cylinder, an intake pipe to said cylinder, -a throttle in said intake pipe, said ejector communicating with said intake pipe between said throttle and said cylinder.

4. The combination of a vacuum chamber and apparatus actuated by the vacuum therein, and operative therewith, to elevate a liquid, a `vacuum producing passage communicating with said vacuum chamber, and an ejector adapted to produce a vacuum in said passage, an internal combustion-engine having a cylinder, said ejector being connected with the cylinder of the engine so that said ejector shall be operated by gases supplied from said cylinder, `said ejector communicating with the intake pipe to said cylinder.

5. In a vacuum feed apparatus, an operating float, a loop connected with and extending from said float, and a valve operatmg part consisting of a wire 'bent to form tivo' parallel portions with a loop joining the same, the loop rising from said oat engaging over the loop jolning said parallel por- 40 tions and said parallel portions extending a fiange, said and reciprocating in ides.

6. In a vacuum fee apparatus, a dividing wall having an aperture therethrough, a conduit having a shoulder, said conduit passing through said a rture with its shoulder against one sur ace .of said dividing wall, said conduit bein spun over upon the other surface of said dlviding wall to secure said part in position.

7. In an auxiliary tank for vacuum feed apparatus, a disk, bell-shaped parts having anges around the open ends of said piarts, said anges being secured to said dis an equalizing pipe having its end provided with e lying under the flange of one of said be -shaped parts and being secured in position thereby.

8. In a vacuum feed apparatus, the combiy vnation of a main tank, a supplementary tank,

a conduit adapted to su ply liquid from said main tank to said supp ementary tank, said.

lvacuum in said chamber and operative therewith to elevate the liquid, and means for equalizing the pressure in both chambers when required. v

9. In a vacuum feed system, a vacuum producing passage, a Vvalve controlling said passage and having its stem formed lnto a loop, an operating float and a U-shaped projection rising from ,said floatl and engaging said loop with lost motion substantially as and for lthe purpose described.

10. In a supplementary tank for a vacuum feed system, a disk, bell-shaped parts having flanges around the opening end of said parts, said flanges'being securedto said disk forming an upper and a lower chamber, an aperture in sald lower chamber, a conduit having a shoulder, said conduit passing through said aperture with its shoulder against one surface of said lower chamber, said conduit being spun over upon the other surface to secure said part in position.

l1. The tank a, the bracket y, said bracket Y ejector shall be operated by gases supplied 'l from said cylinder, a cock in the connection between the ejector and cylinder, a throttle valve, said cock and throttle valve being connected so as to turn together.

In testimony whereo f ,'I sign this specification.

FREDERICK WEINBERG.

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